Dzhokhar-Tsarnaev-Boston-Marathon-Bombing

The most recent terrorist attack on a US sporting event was carried out by the Tsarnaev brothers, radicalized American citizens who exploded knapsack bombs at the Boston Marathon in April 2013. The younger brother, Dzhokhar Tsarnaev, is shown in this image circulated by the FBI during the manhunt resulting in his arrest. Image credit: FBI